JP4495171B2 - Cleaning tool and manufacturing method thereof - Google Patents

Description

  The present invention relates to a cleaning tool for wiping off dust such as dust and dust and a method for manufacturing the cleaning tool, and more particularly to a cleaning tool in which fibers are bonded to a sheet-like base material and a method for manufacturing the cleaning tool.

  Various cleaning tools have been used in the past to remove dust and dirt adhering to furniture such as chests, electrical products such as personal computers and lighting equipment, walls inside buildings, sills, and duck. A typical example is a group. However, a general grouper removes dust from a cleaning object and does not have a function of wiping off dust. In order to solve this problem, a cleaning tool composed of a sheet such as a nonwoven fabric and a fiber bundle has been proposed and is currently used.

  For example, Patent Document 1 below describes an invention relating to a cleaning mop that is formed by heat-sealing (heat-sealing) a fiber or strip-like film having heat-fusibility to a base material. Patent Document 2 below describes an invention relating to a disposable wiping tool in which a heat-fusible sheet and a heat-fusible fiber are integrated.

In the cleaning tools according to these inventions, materials having heat-fusibility are both selected and used for the fibers and the base sheet. Moreover, as a manufacturing method of the cleaning tool, a heat seal method is adopted in which both are integrally joined by heating and melting.
JP 2004-298650 A Japanese Patent No. 3208306

  The above-described conventional technique for integrally joining the fiber and the base sheet by heat sealing has the following problems, although there is an advantage that the work can be performed with a small number of steps.

  First, according to this method, although the number of steps is small, a sufficient heating time is required to completely heat-seal the fiber and the base sheet, so that the processing time is long and the processing cost is high. It was a thing.

  Second, when the fibers and the sheet are made of different materials, it has been difficult to uniformly and reliably integrate them by heat sealing. That is, since the melting temperatures of the fibers and the sheet do not necessarily match, it is necessary to heat the fibers to a temperature sufficient for the material having a higher melting temperature in order to join them sufficiently by heat sealing. Therefore, since the other material is in an overheated state, the material is thermally deteriorated or the durability is lowered.

  Third, there has been a problem that both the fiber and the base sheet must be selected from materials that can be heat-sealed. For this reason, for example, even when it is desired to flexibly change the material of the base sheet to another material that is more excellent in strength and durability, there are cases where restrictions are imposed due to the lack of freedom of material selection.

  Fourthly, when joining by heat sealing, in order to perform uniform heating, the material is generally heated and pressed by a press heater having a narrow contact width with the material to be fused. It becomes. On the other hand, when this contact width is increased and heat fusion is performed with a wide bonding area, the amount of heat to be applied to the press heater is enormous and requires a high processing cost. It tends to occur. This is a factor in which a part of the material is not given a sufficient amount of heat and heat sealing of that part is insufficient, or the other part is given an excessive amount of heat and causes thermal degradation. It was.

  Fifth, when a fiber and a substrate are heated and pressed by a heat-sealing press heater, a high concentrated load is generally applied to a joint portion that is in a line shape. Therefore, when the base material is a thin sheet body, a convex press mark is likely to occur on the upper surface of the sheet, which is the side opposite to the surface (lower surface) to which the fibers are bonded. When such press marks are generated, the aesthetic appearance of the product is impaired, and the smoothness of the upper surface of the sheet is impaired. For this reason, in the case of the conventional heat sealing method, problems such as a decrease in workability of the sheet upper surface and a decrease in dust collection ability when the sheet upper surface is used as a cleaning sheet have occurred. Further, in the case of such a heat seal method, there is a possibility that the surface to be cleaned is damaged during cleaning by the heat-cured fused portion.

  In light of these problems, the present invention is a cleaning tool with excellent dust collection performance, enabling a wide selection of materials for the fibers and substrate sheets constituting the cleaning tool, and preventing thermal deterioration and thermosetting of the materials. Another object of the present invention is to provide a cleaning tool that can be manufactured in a short processing time, and a manufacturing method thereof.

The cleaning tool of the present invention performs heat fusion in a direction perpendicular to the fiber direction at a substantially central portion in the fiber direction of an assembly of a large number of long fibers having heat fusion properties, and the fibers are bonded by heat fusion. When binding a long-fiber bundle formed by providing a linear heat-sealed portion bonded to each other and bonding the long-fiber bundle formed with the binding portion to the base sheet with an adhesive, the adhesive is applied in a spot shape. The long-fiber bundle is bonded to a base material sheet, and a spot-like bonded portion is formed by an adhesive . Therefore, it is possible to even when there is no heat-sealable to the timber charge of the base sheet to obtain a cleaning tool of the present invention enables a wide selection of materials than before. Therefore, for example, a material can be freely selected from materials having no heat fusibility according to required specifications such as the shape, durability, and recyclability of the substrate. In addition, the cleaning tool having excellent wear resistance can be obtained without the fibers being frayed and damaged by repeated use of the cleaning tool. In addition, even if only long fibers are bonded to each other by heat sealing, since the long fiber bundle and the base sheet are bonded with an adhesive, the manufacturing efficiency of the entire cleaning tool can be improved. it can.

In addition, since the joint between the long-fiber bundle and the base sheet is formed as a spot-like joint, if there is a joint near the tip of the long fiber, the length of the freely movable portion of the fiber Since the long fibers are joined only by the bundling portion in the portion where the joining portion is not provided, the length of the freely movable portion of the fiber can be increased to about half of the long fiber. The lengths of the freely movable portions of the long fibers adjacent in the lateral direction can be made discontinuously large. Thereby, long fibers are not entangled and rounded, and it is possible to obtain an effect that the dust collection performance of the cleaning tool does not deteriorate even after repeated use.
Moreover, since it is a joining method using an adhesive, even if the fibers and the base sheet are made of different materials, the respective members are integrally and reliably joined together. In addition, since it is possible to select and use the hardness of the adhesive, it is possible to select the soft adhesive so that the joint is thermally cured as in the case of the heat seal method. Will not hurt. Furthermore, by using a hot-melt adhesive, the material can be bonded only by heating and cooling the material to a relatively low temperature, so that the processing time and processing cost can be greatly reduced.

  In the case of the conventional heat sealing method, generally, the joint portion having a narrow line shape is heated and pressed intensively in order to sufficiently melt the material to be fused and perform heat sealing without unevenness. For this reason, in the case of a conventional heat seal method in which the base material is in the form of a thin sheet, and a large number of long fibers are placed on the base material and integrally heat pressed, a convex shape is formed on the upper surface side of the base material sheet. Various problems were caused because of the press marks. On the other hand, according to the method of the present invention in which the base sheet and the fiber bundle of long fibers are joined by an adhesive, a local load is avoided, so that the top surface of the base sheet is not dependent on the thickness. There is an effect that there is little damage to the substrate.

In the cleaning tool of the present invention, the long fiber bundle and the base sheet are joined by spot-like joints distributed and arranged at a plurality of locations. In addition, the length from the fixed end of the long fiber to the free end in the binding portion of the long-fiber bundle is different from the length from the fixed end of the long fiber to the free end in the spot-like joint. Further, the long fiber bundle can be bonded to the base sheet by allowing the adhesive to penetrate into the long fiber bundle. In this case, the length of the freely movable part of the long fibers adjacent to each other in the height direction (longitudinal direction) from the base sheet can be greatly varied by the penetration spots of the adhesive. This makes it easier to obtain dust-free dust collection performance. Moreover, it becomes possible to avoid that long fibers are intertwined and gathered into a dumpling shape and the dust collection performance is deteriorated.
Further, in the cleaning tool of the present invention, the brush-like piece non-forming portion of the brush sheet having a plurality of brush-like pieces may be integrally joined to the long fiber bundle and the base sheet via an adhesive. . In this case, the scraping and capturing of dust can be efficiently performed by combining the brush sheet and the long fiber bundle . Moreover, since a brush-shaped piece non-formation part is adhere | attached with a base material sheet or a long-fiber bundle body among a brush sheet, it can be reliably integrated with these by the use of few adhesive agents.

In the present invention, the base sheet may have a plurality of strips. Thereby, the dust collection capability of the cleaning tool can be further improved.
The long-fiber bundle body composed of a large number of fibers may be formed by overlapping a fiber bundle composed of fibers having a small fineness and a fiber bundle composed of fibers having a large fineness. Further, it is preferable that the thickness of the fiber having a small fineness is 0.01 mm to 0.05 mm, and the thickness of the fiber having a large fineness is 0.06 mm to 0.3 mm. Further, the fibers constituting the long-fiber bundle and the brush sheet may be made of different materials. By using different materials for each member, since the cleaning tool is combined with members having different dust collection capabilities, the dust collection capability of the entire cleaning tool can be further enhanced.
The long fiber bundle may be provided between the base sheet and the brush sheet.
The brush-like piece of the brush sheet may be wider than the diameter of the fibers constituting the long fiber bundle .
Adhesives is preferably a hot melt adhesive, also may contain a colorant.
It can be the base sheet provided with grip handle mounting portion.
The long fiber bundle may be provided on both upper and lower surfaces of the base sheet.

The manufacturing method of the cleaning tool of the present invention aligns the fiber direction of a large number of long fibers having heat-fusibility, makes a long-fiber bundle by fusing a substantially central portion of the long fibers by heat-fusing means, The adhesive is applied in the form of a spot at the joint position between the long-fiber bundle and the base sheet, the long-fiber bundle and the base sheet are overlapped, and the long-fiber bundle and the base sheet are overlapped at the joint position. The cleaning tool is manufactured by joining the two.

Further, in the present invention, a long fiber bundle is formed by aligning the fiber directions of a large number of long fibers having heat-fusibility, and fusing a substantially central portion of the long fibers by heat fusing means. A hot-melt adhesive is applied in the form of a spot at the joint between the substrate and the base sheet, the long fiber bundle and the base sheet are overlapped, and these are heated to a temperature higher than the melting temperature of the adhesive by a press heater. After the pressing, the joining portion position is further heated to a temperature higher than the heat fusion temperature of the long fibers by a hot blade and pressed to join and clean the long fiber bundle and the base sheet at the joining portion position. Tools can be manufactured.

FIG. 1 is a perspective view of a cleaning tool according to a first embodiment of the present invention. 2 is a longitudinal sectional view taken along line II-II in FIG. FIG. 3A is a plan view showing a method for manufacturing a brush sheet in the cleaning tool of the present invention. FIG. 3b is a plan view of the brush sheet in the cleaning tool of the present invention. FIG. 4 is a plan view of the cleaning tool of the present invention. FIG. 5 is a perspective view showing a long-fiber bundle of the cleaning tool according to the second embodiment of the present invention. FIG. 6 is an exploded perspective view of the cleaning tool according to the second embodiment of the present invention. FIG. 7 is a perspective view of the cleaning tool according to the third embodiment of the present invention. FIG. 8 is a schematic cross-sectional view of an adhesive joint. FIG. 9 is a perspective view of a long-fiber bundle having dotted spot-like adhesive joints. FIG. 10 is a perspective view showing a joined state between the base sheet and the grip handle attaching portion. FIG. 11 is a cross-sectional view showing an adhesive joint between the base sheet and the long-fiber bundle.

  Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. However, the present invention is limited to the following embodiments, for example, regarding the outer shape of the fiber bundle or the base sheet, the shape and location of application of the adhesive, the position of the binding portion between the fibers, the presence or absence of the grip pattern, and the shape thereof. It is not a thing. The perspective view of the cleaning tool concerning 1st embodiment of this invention is shown in FIG.

  In the figure, 1 represents a cleaning tool. The cleaning tool 1 has a grip handle attachment portion 2. The gripping handle 4 is attached to the insertion hole 3 of the gripping handle attaching portion 2 by inserting the support rod 5 of the gripping handle 4 so that it can be used as a hand mop. The cleaning tool 1 of the present invention is formed by integrally joining a base sheet 6 and a fiber bundle 7 in which a large number of fibers are bundled into a sheet shape with an adhesive. In the cleaning tool 1 according to the present embodiment, as shown in FIG. 2, a brush sheet 9 having a brush-like piece 8 is further joined and integrated with the fiber bundle 7. As for the stacking order of the fiber bundle 7 and the brush sheet 9, whichever is on top may be bonded to the base sheet 6. In the present embodiment, the fiber bundle 7 is bonded and integrated between the base sheet 6 and the brush sheet 9. In the present invention, the fiber bundle 7 made of fibers and the brush-like piece 8 of the brush sheet 9 are collectively referred to as a main cleaning unit for collecting dust.

The base sheet 6 is a thin base of the cleaning tool. The base sheet 6 is a member that supports the main cleaning portion and that can be flexibly deformed according to the shape of the surface to be cleaned, and that has a function for obtaining good dust collection performance of the cleaning tool. . The thickness and shape are not particularly limited, but a sheet having a circular, oval, elliptical or rectangular outer shape with a thickness of 1 mm or less is common. Moreover, about the material of the base material sheet 6, if the main cleaning part can be suitably joined with an adhesive agent, it will not specifically limit. For example, a sheet such as paper, a synthetic resin sheet, or a nonwoven fabric is used as the base sheet 6. Of these, nonwoven fabrics are particularly preferably used from the viewpoints of lightness, strength, durability, and adhesiveness. As the nonwoven fabric, a spunlace nonwoven fabric, a spunbond nonwoven fabric, a thermal bond nonwoven fabric, an air-through nonwoven fabric, a point bond nonwoven fabric and the like can be used, and a spunbond nonwoven fabric and a thermal bond nonwoven fabric are preferable. As a fiber which comprises a nonwoven fabric, any of a natural fiber, a synthetic fiber, and a composite fiber may be sufficient. Nonwoven fabric, of about a basis weight 20g / m ² ~100g / m ² is preferred. In order to improve the adhesiveness of the adhesive, a surface treatment such as degreasing, sealing, and surface roughening may be applied to the surface (referred to as the lower surface) of the base sheet 6 to which the main cleaning portion is bonded. .

  As shown in FIG. 1, the base sheet 6 may be provided with a plurality of strips 10 on the peripheral edge thereof to form a sub-cleaning portion. In the present embodiment, an example in which a plurality of strips 10 are provided on both end sides of the grip handle mounting portion 2 is shown. The base material sheet 6 is not limited to being composed of a single sheet, but may be composed of two or more stacked sheets. When the base sheet 6 is configured by stacking a plurality of sheets, not only the same type of sheets but also different sheets of materials and colors can be used in a stacked manner.

  The fiber bundle 7 is formed by bundling a large number of fibers into a sheet shape, and a bundle of a plurality of fibers can be used to such an extent that each fiber is not scattered. However, the fiber bundle 7 may be one in which the fibers are partially bonded together by fusion, adhesion or the like as necessary. The fiber bundle 7 is formed by, for example, continuously bundling a large number of long fibers in a sheet shape at appropriate intervals in a direction orthogonal to the longitudinal direction of the fiber, and then cutting the joint and the intermediate portion of the joint. It can obtain by the method of doing.

  In the present invention, the long fiber refers to a yarn formed from a single yarn from the base end to the tip end. The cleaning tool concerning this invention uses a long fiber for a main cleaning part, It is characterized by the above-mentioned. This is to avoid a short yarn twisted by repeated use of the cleaning tool when the main cleaning portion is composed of short fibers, which may be worn out and fall off from the main cleaning portion. Therefore, in the present invention, the long fiber includes a yarn formed by twisting a plurality of long fibers thickly, and the length and shape of the cross section of the long fiber are not particularly limited as long as the long fiber is made of one continuous material. To do.

  The fibers constituting the fiber bundle 7 include, for example, natural fibers such as cotton and wool, synthetic fibers such as polyethylene, polypropylene, polyethylene terephthalate, nylon and polyacryl, core-sheath fibers, sea-island fibers, and side-by-side fibers. Fiber or the like is used. Among these, when the fibers are partially bonded by heat fusion, a core-sheath type composite fiber having a core made of polypropylene and a sheath made of polyethylene is preferable. This is because such a composite fiber has both excellent heat-fusibility of polyethylene constituting the sheath and strength of polypropylene constituting the core. Further, a crimped fiber such as mechanical crimp or thermal crimp may be used. As the fiber bundle 7, a long fiber bundle generally called “tow” manufactured from polyethylene, polypropylene, nylon, polyester, rayon or the like can be used.

  The fiber which comprises the fiber bundle 7 has a thickness of about 0.01 mm to 0.3 mm in diameter. The fiber bundle 7 may be composed of only the same fiber material, fineness (thickness), color, or the like, or may be composed of two or more different fibers. Further, two or more fiber bundles 7 formed in a planar shape can be used in an overlapping manner. In this case, sheet-like fiber bundles having different thicknesses, fiber colors, and constituent fiber types can be arbitrarily combined. If fiber bundles having different colors are used in an overlapping manner, the design of the cleaning article can be improved. When two or more fiber bundles 7 are used in an overlapping manner, particularly when fiber bundles made of thin fibers and fiber bundles made of thick fibers are used in an overlapping manner, thick thick fibers scrape dust and scrape out. Since the fine dust functions so as to take in the dust, the cleaning can be effectively performed, and the thick fibers are preferable because they contribute to the prevention of entanglement between the thin fibers. As the fine fibers, those having a diameter of 0.01 mm to 0.05 mm are preferable. Moreover, as a thick fiber, what is necessary is just thicker than the said thin fiber, but the thing of the thickness of 0.06 mm-0.3 mm diameter is preferable. When a plurality of sheet-like fiber bundles having different fiber thicknesses, fiber types, colors, and the like are used in an overlapping manner, the number of overlaps is not particularly limited, but usually 2 to 10 is preferable.

  The length of the fiber is not particularly limited and is generally about several centimeters to several tens of centimeters. Each fiber may have a uniform length or may have variations.

  The brush sheet 9 can be composed of paper, non-woven fabric, synthetic resin sheet, and the like, similar to the base sheet 6, but is preferably a synthetic resin sheet. About the manufacturing method of the brush sheet | seat 9, a top view is shown to FIG. 3 (a), (b). First, the long sheet 11 is cut along the longitudinal direction so that the cut non-forming portions 13 are intermittently formed, thereby forming a large number of cuts 12 (FIG. 3A). Next, by cutting the substantially central portion of the notch 12 in the width direction of the sheet 11, a brush sheet 9 having a large number of brush-like pieces 8 on both sides of the brush-like piece non-forming portion 14 can be obtained (FIG. 3 (b)). The brush-like piece 8 is preferably wider than the diameter of the fibers constituting the fiber bundle 7. Examples of the synthetic resin sheet constituting the brush sheet 9 include polyethylene and polypropylene. A plurality of brush sheets 9 may be used in an overlapping manner.

  In the cleaning tool 1 of the present invention, the base sheet 6 and the fiber bundle 7 are bonded at least partially and joined together. Further, the brush sheet 9 is integrally joined to the base sheet 6 and the fiber bundle 7 via an adhesive with at least a part of the brush-shaped piece non-forming portion 14. As a method of partially bonding the base sheet 6, the fiber bundle 7, and the brush sheet 9, for example, as shown in FIG. 4, a linearly applied adhesive 15 or a dot-coated adhesive 16 is used. A method of bonding is adopted.

  For the adhesive, an emulsion type adhesive, a two-component curable adhesive, a thermoplastic resin adhesive, an elastomer adhesive, a thermosetting resin adhesive, an instantaneous adhesive, a hot melt adhesive, or the like is used. be able to. Among these, a hot melt adhesive is preferable from the viewpoint that a rapid bonding operation by heating and cooling is possible. From the viewpoint of obtaining a deep adhesive layer having good fiber permeability, a solution-type or emulsion-type thermoplastic resin-based adhesive or elastomer-based adhesive is preferable.

  Either of these may be sufficient as the surface which apply | coats an adhesive agent beforehand among the base material sheet 6 and the fiber bundle 7, and both may be sufficient as it. As the adhesives 15 and 16, an adhesive containing a colorant can be used. When an adhesive containing a colorant is used, the color of the adhesive can be seen through from the base material sheet 6, and the design property can be imparted to the cleaning tool 1 by contrast with the color of the base material sheet 6. Furthermore, when the colored adhesive 15 is applied linearly so that the color of the adhesive can be seen through near the center of the grip handle attachment portion 2, the center position when the support rod 5 of the grip handle 4 is inserted can be easily positioned. It becomes.

  The cleaning tool 1 of the present invention can change the color of each member of the base sheet 6, the fiber bundle 7, and the brush sheet 9. By using a combination of different color members, the design is improved. The cleaning tool 1 of the present invention is also used as a disposable cleaning tool, and after use, the cleaning part 1 can be extracted from the handle part 2 and replaced with a new cleaning part 1.

  FIG. 5 is a perspective view showing a fiber bundle 7 according to the second embodiment of the present invention. In the present embodiment, the fiber bundle 7 for wiping and removing dust is formed by a long fiber bundle 31 in which a large number of long fibers 30 aligned in the fiber direction are coupled to each other by a bundling portion 40.

  The fiber direction means the longitudinal direction of the long fibers 30. In the long-fiber bundle 31, the fibers are bundled with their directions aligned with each other. However, the long-fiber bundle 31 does not exclude a state in which other fibers are slightly mixed in the direction crossing the many long fibers 30 constituting the long-fiber bundle 31. Further, each long fiber 30 can achieve the object of the present invention even when the long fiber bundle 31 is formed in a linearly stretched state, or when the fiber is bent entirely or locally. Therefore, in the present invention, the state in which the fiber directions of the long fibers 30 are aligned is to exclude that the fiber direction is in a randomly oriented state, and the overall shape and orientation of the long fibers 30 are mutually different. It means a similar state and does not require strict consistency in the fiber direction.

  A large number of long fibers 30 aligned in the fiber direction are first bundled together at a bundling portion to form a long fiber bundle 31. The shape of the long-fiber bundle 31 is not particularly limited, such as a planar shape, a saddle shape, or a block shape. In binding, a large number of long fibers 30 are assembled at a predetermined fiber density in the radial direction. On the other hand, the fiber direction may be collected with one end or the center aligned or in an irregular state.

  The means for obtaining the long fiber bundle 31 by binding the long fibers 30 to each other is not particularly limited, and a suitable means can be selected according to the material of the long fibers 30. When the long fibers 30 are made of a material having a heat-fusible property, heat sealing is preferable from the viewpoint of the number of processing steps and processing time. The heating method may be a heating / pressing method using a press heater, or an ultrasonic heat fusion method. In addition, the long fibers 30 can be bound together by impregnation with an adhesive or sewing. Moreover, you may combine these methods.

  About the material of the long fiber 30, it can select from the long fiber material quoted in 1st embodiment, and can use it. The long fibers 30 may be the same in material and fineness (thickness), or a plurality of types may be mixed and used. Particularly, it is preferable to combine fibers having different finenesses because the scraping performance of the dust can be improved and entanglement of the fibers can be prevented. In addition, when a plurality of types of long fibers 30 having different materials are bound to each other by heat sealing to obtain a long-fiber bundle 31, these materials are common or materials having close melting points are used. It is good to choose. This is to prevent thermal deterioration of the material due to excessive heating of the material during the heat sealing operation and to improve the efficiency of the operation.

  There are no particular restrictions on the location, shape, and number of the binding portions 40 that are the binding portions of the long fibers 30. For example, when the long fibers 30 are bonded together by impregnating the adhesive, the binding portion 40 has a predetermined width. On the other hand, when joining by heat sealing, it is common that the linear binding part 40 is provided in the direction which crosses a long fiber. However, it is not necessary that all the long fibers 30 constituting the long-fiber bundle 31 are integrally coupled by one bundling portion 40, and the whole may be coupled by two or more bundling portions 40. That is, as long as all the long fibers 30 are bonded to any other long fiber 30 and are not peeled off from the long-fiber bundle 31, the binding portion 40 is, for example, a short line-shaped binding portion that intersects with the long fibers 30. It is good also as a structure of providing two or more in zigzag form.

  FIG. 6 is an exploded perspective view of the cleaning tool according to the second embodiment of the present invention. 6 is a base material sheet, 20 is a main cleaning part, and 50 is an adhesive. A long fiber bundle 31 is obtained by heat-sealing a large number of heat-fusible long fibers 30 aligned in the fiber direction at a single band-like bundling portion 40 provided substantially at the center in the fiber direction. Is molded. Such molding is performed prior to the joining of the base sheet 6 and the long fiber bundle 31. For the base material sheet 6, the materials mentioned in the first embodiment can be selected and used. A plurality of strips 10 may be provided on the peripheral edge of the base sheet 6 to form a sub-cleaning portion. FIG. 6 also shows a state in which the cleaning tool according to the present invention is obtained by joining the long fiber bundle 31 to the base sheet 6 through the adhesive 50 applied to the base sheet 6 over the width W. ing.

  Even if the cleaning tool according to the present invention is used as a cleaning cloth for wiping dust in a state where the long fibers 30 are laid flat against the base sheet 6, the end of the long fibers 30 is outside the surface of the base sheet 6. Even a bulky and fluffed mop head can be used in the state where some of the long fibers 30 are fluffed. In any of these cases, the cleaning tool according to the present invention is characterized in that dust is scraped off and captured by the main cleaning unit 20 formed from the long fibers 30.

  The long fibers 30 are fixed to the cleaning tool 1 by a bundling portion that joins the long fibers and, in some cases, an adhesive bonding portion with the base sheet 6. Among these, the length from the portion (hereinafter referred to as “fixed end”) fixed to the binding portion or the joining portion near the outermost edge of the long-fiber bundle 31 to the free end at the tip is long. The fiber 30 has a movable part (hereinafter, a part from the fixed end to the free end is referred to as a “movable part”). That is, the long fiber 30 has a movable portion having a predetermined length that is not bound to the other long fiber 30 or joined to the base sheet 6. The movable part freely moves around the fixed end, and constitutes the main cleaning part 20.

  The cleaning tool according to the present invention preferably has a large number of movable parts and a long length for improving the dust collection performance. Therefore, the long fiber bundle 31 is bonded to the base sheet 6 at a substantially central position excluding both ends in the fiber direction so that the long fibers 30 have free ends at both ends. It is preferred that this is done.

  FIG. 7 is a perspective view of the cleaning tool according to the third embodiment of the present invention. In the present embodiment, the main cleaning unit 20 is made bulky and fluffed to form a mop head. A long fiber bundle 31 is first formed by bundling the long fibers 30 at a band-like bundling portion 40. Thereafter, at a substantially central portion in the fiber direction, the long fiber bundle 31 and the base sheet 6 are bonded via the adhesive 50 at a band-shaped bonding portion 51 having a predetermined width including the binding portion 40. Yes. The movable part of the long fiber 30 forms the main cleaning part 20. A mop head-like cleaning tool according to the present embodiment can be obtained by making the main cleaning unit 20 fluff out of the surface of the base sheet 6. Since the free end 21 can move around in a wide area, the cleaning tool according to the present embodiment can not only entangle the dust on the flat surface or the convex surface, but can also scrape and catch the dust in the groove. is there.

  In the second and third embodiments, a brush sheet having a plurality of brush-like pieces is sandwiched between the long-fiber bundle 31 and the base sheet 6, and these are integrally bonded with an adhesive. It is also suitable to do.

  Here, the length and position of the movable part of the long fiber 30, that is, the length from the fixed end 22 to the free end 21 of the long fiber 30 and the positional relationship thereof have a predetermined variation for each adjacent long fiber 30. Describe the benefits. When the length of the movable part and the position of the fixed end 22 are greatly different between the adjacent long fibers 30, the movable ranges of the respective free ends 21 are also greatly different. Therefore, since the dust collection areas covered by the individual movable parts are different from each other, the main cleaning part 20 as a whole can easily obtain a dust collection performance with no spots by overlapping the dust collection areas.

  Further, the position and the movable range of the free ends 21 of the adjacent long fibers 30 are greatly different, so that the long fibers 30 are intertwined and gathered into a dumpling, and the dust collection performance of the main cleaning unit 20 is prevented from deteriorating. There is an advantage that it is easy.

There are several ways to obtain this effect. Mentioned above,
(A) A method of causing variation in the length of the long fiber 30 in advance,
(B) a method of making the positions of the long fibers 30 in the fiber direction uneven when binding the long fibers 30 to form the long fiber bundle 31;
(C) a method of forming a plurality of short line segments in which the binding portions 40 of the long fibers 30 are provided in a staggered manner,
These have the effect of changing the length and position of the movable part of the long fiber 30 discontinuously.

  In addition, according to the method of joining the long fiber bundle 31 and the base sheet 6 with an adhesive as in the present invention, an effect of further discontinuously varying the length and position of the movable part can be obtained. Each long fiber 30 included in the long-fiber bundle 31 has long fibers that are close to each other in the height direction (longitudinal direction) from the base sheet 6 and in the in-plane direction (lateral direction) of the base sheet 6.

  Among these, first, the principle that the length and position of the movable parts formed at the ends of the long fibers adjacent in the longitudinal direction are greatly different depending on the case in the joining method using the adhesive will be described. The liquid adhesive applied between the base sheet and the long-fiber bundle penetrates the gap between the long fibers to a predetermined height (depth) from the base sheet in the height direction by capillary action. To go. However, this penetration depth differs depending on the coating thickness of the adhesive, as well as small differences in the local density of long fibers and the wettability of the fiber surface. Turn into.

  As a specific example, FIG. 8 shows a schematic cross-sectional view in which the adhesive bonding portion between the base sheet 6 and the long fiber bundle 31 is cut along the fiber direction of the long fibers. 21 is a typical free end of a long fiber, 22 is a fixed end, L1 and L2 are penetration depths of the adhesive 50, 211 to 213 are free ends at each depth position, and 221 to 223 are fixed ends at the same position. To express. The distance from each fixed end to the free end is the movable portions 201 to 203. The adhesive 50 applied to the base sheet 6 penetrates between the long fibers to a predetermined depth due to its permeability. Therefore, since not only the uppermost long fibers that are in direct contact with the base sheet 6 but also the long fibers existing within a predetermined depth are adhesively bonded to the base sheet 6 by the adhesive 50, the positions of these fixed ends are It becomes relatively near the tip of the long fiber (fixed ends 221, 222). Accordingly, the length of the movable part is shortened (movable parts 201 and 202). On the other hand, the long fibers at a depth where the adhesive 50 does not permeate are connected to the base sheet 6 only through the bundling portion 40, so the fixed end position is near the center of the long fibers (fixed end 223). The length of the movable part is relatively long (movable part 203). Further, as shown in FIG. 8, the lengths of the movable parts 201 and 202 adjacent to each other in the height direction (vertical direction) from the base sheet 6 are greatly different depending on the penetration spots of the adhesive 50.

  Next, the principle that the lengths and positions of the movable parts greatly differ depending on the case in the bonding method using the adhesive for the long fibers that are close to each other in the in-plane direction (lateral direction) of the base sheet 6 will be described. When joining a base material sheet and a long-fiber bundle body through an adhesive agent, the application | coating shape and area of an adhesive agent are arbitrary, and it can also join in the scattered multiple places.

  For example, as shown in a perspective view in FIG. 9, the base sheet 6 and the long-fiber bundle 31 can be bonded and bonded by a plurality of spot-like bonding portions 51 that are scattered. The upper side in the figure is an adhesive surface with the lower surface of the base sheet 6 (not shown), and the lower side in the figure is a dust collecting surface. Moreover, a typical thing is shown with a thick line among the movable parts which comprise the main cleaning part 20. FIG.

  As shown in the figure, the joint 51 exists near the tip of the long fiber 30 by dispersively arranging the spot-like joint 51 in a plurality of locations at the substantially central portion in the fiber direction of the long-fiber bundle 31. In this case, the movable part 204 of the fiber is shortened. On the contrary, in the part where the joining part 51 is not provided, since the long fibers are joined only by the binding part 40, the length of the movable part 205 of the fiber is increased to about half of the long fibers. Thus, by providing the scattered joint portions 51 at a plurality of locations, the lengths of the movable portions that are close to each other in the lateral direction in the main cleaning portion 20 can be made large and different.

  As described above, according to the method of the present invention in which the base sheet and the long-fiber bundle are bonded with the adhesive, the length of the movable portion in the main cleaning portion is set to the height (vertical) direction and the in-plane (transverse) direction. Can be discontinuously different. Thereby, even when the main cleaning part is bulky and fluffed to obtain a mop head-shaped cleaning tool, the length of the movable part differs depending on the part, so that the long fibers are not entangled and rounded. The effect that the dust collection performance of the cleaning tool does not deteriorate even when used is obtained.

  In the case of the conventional heat sealing method, all the long fibers are melted and pressed under the press line that is the bundling portion, and conversely, the long fibers and the base sheet are completely joined at places other than the press line. Not in a state. Therefore, the presence or absence of joining of the base sheet and the long fiber does not change depending on the depth position of the fiber, and the effect of making the length and position of the movable portion discontinuous in the vertical direction cannot be obtained.

  In the heat sealing method, since the long fibers need to be heated uniformly, a hot blade having a narrow blade edge is generally used as a press heater, so that the bundling portion has a simple line shape. Therefore, in order to make the length and position of the movable part discontinuous in the lateral direction, one of the following two methods must be employed. That is, the first is a method of heating and pressing using a specially shaped press heater in which the head branches and protrudes at predetermined interspersed positions. The second is a method of repeating positioning and heating / pressing with respect to a predetermined scattered spot by the number of scattered joints using a normal press heater having a simple tip shape. In the first method, it is expensive to manufacture a special press heater, and it is extremely difficult to uniformly heat and press the long fibers with such a complex-shaped head. For this reason, it is easy to cause the deterioration of the joint quality and the thermal deterioration of material by temperature spots. In the second method, processing costs are required due to repeated heat sealing operations. In addition, the previously heated and bonded portions are gradually cooled and thermally contracted, and the entire bonding portion 51 may be aligned and heat-sealed while the other bonding portions 51 must be aligned and heat sealed. is there.

  About the upper surface of a base material sheet, various processes are possible besides using as a wiping sheet for cleaning. Specifically, it is processed into a mittens that can accommodate the user's hands or feet, a grip handle mounting portion for mounting the grip handle is provided, and another main cleaning portion is provided separately from the lower surface side of the base sheet. Or a combination thereof.

  A method of providing the grip handle attaching portion 2 on the upper surface of the base sheet 6 will be exemplified using the perspective view shown in FIG.

  The grip handle attaching portion 2 is made of a non-woven sheet having heat-fusibility. Although the manufacturing method is not particularly limited, for example, two non-woven fabric sheets may be overlapped and heat-bonded to each other with three fusion wires 63 having a predetermined interval. Alternatively, one non-woven fabric sheet may be folded and heat-sealed to each other by three fusion wires having a predetermined interval or two fusion wires excluding the folding wire. Thereby, the bag-shaped grip handle attaching part 2 having the attaching part base 64 on the bottom surface is made separately from the base material sheet 6. Two insertion holes 3 are formed side by side at one end of the grip handle attaching portion 2, and the support rod 5 of the grip handle 4 shown in FIG. 1 can be inserted into each. Further, the other end of the grip handle attaching portion 2 may be sealed by thermal fusion, or may be opened so that the support bar 5 can be inserted from both sides.

  In the fusion line 63, the fibers constituting the nonwoven fabric sheet are melted together to fill the gap between the fibers, and scattering of transmitted light is suppressed, so that light transmittance is improved. Therefore, when the grip handle attachment portion 2 is joined to the base sheet 6, when the attachment base 64 and the upper surface of the base sheet 6 are joined by the colored adhesive 50, the adhesive is applied from the fusion line 63. 50 colors can be easily recognized. Thereby, the design effect of the base material sheet 6 will be obtained more suitably as compared with the case where the fused wire 63 is not provided in the grip handle attaching portion 2. Furthermore, since the outline of the grip handle attaching portion 2 and the position of the insertion hole 3 are easily visually recognized, the grip handle 4 can be attached more easily. The colorant for coloring the adhesive 50 is not particularly limited, and natural mineral pigments, inorganic synthetic pigments, insoluble organic pigments, lake pigments and other pigments, or natural dyes, synthetic dyes, fluorescent dyes and other dyes are preferably used. be able to.

  As described above, the base sheet 6 has the main cleaning portion 20 bonded and bonded to the lower surface, and the sub-cleaning portion is formed by providing a strip on the peripheral edge of the base sheet 6 itself. It is preferable to enable various processes for improving usability. In the conventional system in which the fiber and the base sheet are joined together by heat sealing, convex press marks are formed on the upper surface of the base sheet, and there is a problem that such workability is easily impaired. On the other hand, in the method of joining the fiber bundle and the base sheet with an adhesive as in the present invention, it is not necessary to apply excessive heat or pressure in the bonding process, and this problem is solved. The adhesive bonding of 2 is also preferably performed.

  As a specific example of the method for producing the cleaning tool according to the present invention, a method for obtaining a cleaning tool by joining a base sheet made of heat-fusible long fibers and a nonwoven fabric with a hot melt adhesive will be described below. That is, as the first step, first, a fiber aggregate is formed by laminating spread tows made of long fibers having heat-fusibility into a sheet shape. As a 2nd process, the substantially center part of the fiber direction is mutually joined by the heat seal in the line which runs in a fiber orthogonal direction, and a long fiber bundle is obtained. As a third step, a hot melt adhesive is applied to one surface of the nonwoven fabric sheet in a spot shape at a normal temperature. As a fourth step, this is superposed on the long fiber bundle. As a fifth step, these are pressed by a roll heater and heated to a temperature equal to or higher than the melting temperature of the hot-melt adhesive to impregnate the long-fiber bundle with the adhesive. As a sixth step, the whole is cooled to cure the hot melt adhesive, and the nonwoven fabric sheet and the long-fiber bundle are fixed. As a seventh step, the both ends of the long-fiber bundle body in the fiber direction are fluffed to obtain a mop head-shaped cleaning tool.

  In addition, in the fifth step or the sixth step described above, in order to sufficiently perform adhesive bonding between the base sheet 6 and the long-fiber bundle 31, in addition to the entire heating press by the heater roll, only a predetermined part is used. It is also preferable to further heat and press with a hot blade.

  For example, a long-fiber bundle 31 formed by bundling a large number of long fibers to each other by heat-sealing at the center in the fiber direction is in a state where the vicinity of the bundling portion 40 is thinly crushed as shown in FIG. It becomes. Therefore, when the long-fiber bundle 31 is overlapped with the base sheet 6, the binding portion 40 of the long-fiber bundle 31 does not come into close contact with the lower surface of the base sheet 6, and a gap 52 is generated at that portion ( FIG. 11).

  In the case where a hot melt type adhesive is applied between the two to bond the long fiber bundle 31 to the base sheet 6, when the amount of the adhesive applied is larger than usual, the two are securely bonded, A predetermined adhesive strength is obtained. However, when the application amount of the adhesive remains at a normal application amount, the gap 52 is not sufficiently filled with the adhesive, and the bonding portion with the base sheet 6 in the binding portion 40 of the long-fiber bundle 31 is bonded. The strength may be insufficient. In the latter case, as a post-processing, it is preferable to press the hot blade 70 against the joint portion of the binding portion 40 with the base sheet 6. Whether the hot blade 70 is pressed from the long fiber bundle 31 side (arrow A side in the figure) or the base sheet 6 side (arrow B side in the figure), the hot blade 70 is pressed so as to be sandwiched from both sides. Also good. As a result, the gap 52 can be filled with an adhesive to give a predetermined adhesive strength.

  In this post-processing, the temperature of the hot blade 70 is set to be equal to or higher than the melting temperature of the long fibers 31 or the base sheet 6, and the long fiber bundle 31 and the base sheet 6 are partially or entirely mutually in the thickness direction. It may be heat-sealed. Thereby, the joining force by heat fusion can be supplementarily added to the joining force by the adhesive agent 50, and the long fiber bundle 31 and the base material sheet 6 can be joined better. In carrying out such post-processing, the pressing force for pressing the hot blade 70 is small as compared with the conventional method in which the long fibers and the base sheet are joined together only by heat sealing. The cutting edge temperature is relatively low and the pressing time is short. Therefore, the adhesive joint between the long-fiber bundle 31 and the base sheet 6 is not cured, no press marks remain on the upper surface of the base sheet 6, and the manufacturing efficiency of the cleaning tool is not significantly reduced. .

  According to the present invention, the fiber bundle 7 and the base sheet 6 can be reliably and efficiently joined. That is, in the case where the fiber bundle 7 made of heat-fusible fibers and the base sheet 6 made of non-woven fabric are used, this is attempted only by heat sealing as means for joining the fiber bundle 7 to the non-woven fabric. In this case, the hot blade applied to the fiber bundle 7 first heats and melts the fibers, and then heat is transferred to the nonwoven fabric to heat and melt the nonwoven fabric. However, the nonwoven fabric is a fiber entangled body, and its surface has a rough surface, so that it is difficult to transmit heat uniformly. In addition, since the nonwoven fabric has a void structure, heat transfer efficiency is low. Therefore, the fiber bundle 7 is heated and melted quickly in order to contact the hot blade evenly, whereas even if the nonwoven fabric is made of fibers of the same material and the same diameter as the fibers constituting the fiber bundle 7, It is difficult to efficiently heat-bond the fiber bundle 7 and the nonwoven fabric together.

  As a result, in the conventional technique in which the base sheet 6 and the fiber bundle 7 are integrally heat-sealed, there is a problem in that a poor fusion occurs when the heat supply is insufficient, and the fibers fall off from the base sheet 6. . Further, if excessive heat supply is performed in order to prevent poor fusion, there has been a problem that the fibers and the nonwoven fabric are thermally deteriorated. Therefore, the actual situation is that heat sealing is performed by pressing the hot blade for a long time at a temperature that does not cause thermal degradation of the material, which has the disadvantage that the production efficiency is lowered.

  In the present invention, first, only fibers are bound together by any method to form a fiber bundle 7, which is adhesively bonded to the base sheet 6. Therefore, even when the fibers are bound together by heat sealing, the heat fusion between the fibers can be performed efficiently in a short time. For this reason, even if an adhesion process is added, overall, there is an advantage that the processing time can be greatly reduced as compared with the conventional method in which the fiber bundle 7 and the base sheet 6 are integrally joined only by heat sealing. .

  Moreover, in this invention, when a nonwoven fabric is used as the base material sheet 6, a joining structure with a fiber can be made stronger. That is, when an adhesive is applied to the joint between the fiber and the nonwoven fabric, the adhesive penetrates not only into the spaces between the fibers but also into the fiber gaps of the nonwoven fabric. In particular, since the nonwoven fabric is in a state in which short fibers are entangled, the adhesive enters a fiber gap having a complicated shape, and a large anchor effect is produced in a state where the adhesive is melted or solidified by drying. Due to this anchor effect, the bonding force between the fiber and the nonwoven fabric becomes strong.

The cleaning tool according to the present invention has a high degree of freedom in selecting the material of the fiber and the base sheet, and therefore households that have arrived on furniture such as chests, electrical products such as personal computers and lighting equipment, walls, sills, and duck in the building. It is possible to collect dust by selecting optimum fibers according to physical properties such as particle diameter, shape, polarity, and charging property for dust generated in various fields as well as the dust inside.

Claims (17)

Linear heat in which fibers are bonded to each other by heat fusion in a direction orthogonal to the fiber direction at a substantially central portion in the fiber direction of an aggregate of many long fibers having heat-fusibility. When a long-fiber bundle formed by providing a bundling portion provided as a fusion-bonding portion and bonding the long-fiber bundle formed by providing this bundling portion to the base material sheet with an adhesive, the adhesive is applied in a spot shape to form the long-fiber bundle as a base material. A cleaning tool which is formed by joining a sheet and forming a spot-like joint by an adhesive .   The cleaning tool according to claim 1, wherein the long-fiber bundle and the base sheet are joined by spot-like joints dispersedly arranged at a plurality of locations.   The length from the fixed end of the long fiber to the free end in the binding portion of the long-fiber bundle is different from the length from the fixed end of the long fiber to the free end in the spot-like joint. Or the cleaning tool of 2.   The cleaning tool according to any one of claims 1 to 3, wherein an adhesive is infiltrated into the long-fiber bundle and the long-fiber bundle is bonded to the base sheet.   The cleaning tool according to any one of claims 1 to 4, wherein the long-fiber bundle is formed by overlapping a fiber bundle made of fibers having a small fineness and a fiber bundle made of fibers having a high fineness.   The cleaning tool according to claim 5, wherein the fiber having a small fineness has a thickness of 0.01 mm to 0.05 mm, and the fiber having a large fineness has a thickness of 0.06 mm to 0.3 mm.   The brush-like piece non-forming portion of the brush sheet having a plurality of brush-like pieces is integrally joined to the long fiber bundle and the base sheet via an adhesive. The cleaning tool described.   The cleaning tool according to claim 7, wherein the fibers constituting the long-fiber bundle and the brush sheet are made of different materials.   The cleaning tool according to claim 7 or 8, wherein the long fiber bundle is provided between the base sheet and the brush sheet.   The cleaning tool according to any one of claims 7 to 9, wherein the brush-like piece of the brush sheet is wider than the diameter of the fibers constituting the long-fiber bundle.   The cleaning tool according to any one of claims 1 to 10, wherein the adhesive is a hot-melt adhesive.   The cleaning tool according to any one of claims 1 to 11, wherein the adhesive contains a colorant.   The cleaning tool according to any one of claims 1 to 12, wherein the base sheet has a plurality of strips.   The cleaning tool according to any one of claims 1 to 13, wherein the base sheet has a grip handle attachment portion.   The cleaning tool according to any one of claims 1 to 14, wherein the long-fiber bundle is provided on both upper and lower surfaces of the base sheet.   Align the fiber direction of a large number of long fibers having heat-fusible properties, fuse the substantially central part of the long fibers by heat-sealing means to form a long-fiber bundle, and the long-fiber bundle and the base sheet A cleaning tool characterized in that an adhesive is applied in a spot shape at the joint position, the long-fiber bundle and the base sheet are overlapped, and the long-fiber bundle and the base sheet are joined at the joint position. Manufacturing method.   Align the fiber direction of a large number of long fibers having heat-fusible properties, fuse the substantially central part of the long fibers by heat-sealing means to form a long-fiber bundle, and the long-fiber bundle and the base sheet After applying a hot melt adhesive in a spot shape at the joint position, superposing the long fiber bundle and the base sheet, heating them above the melting temperature of the adhesive with a press heater and pressing, A cleaning tool characterized in that the bonded position of the long fiber is bonded to the base sheet at the bonded position by heating and pressing the bonded position to a temperature higher than the thermal fusion temperature of the long fibers with a hot blade. Production method.

Images